A perinatologist is an obstetrician who has special training in managing patients with high-risk pregnancies, or complications during pregnancy. As a member of the Fetal Treatment Center team, the perinatologist is responsible for managing all aspects of your prenatal care.

For further information regarding Perinatology please refer to the Department of OB/GYN website.

Larry Rand, M.D.

Director of Perinatal Services
Fetal Treatment Center Perinatal Team

Dr. Larry Rand is our Director of Perinatal Services in the Fetal Treatment Center, where he uses his special training and experience with high-risk pregnancies to care for women with fetal complications. Dr. Rand was a medical/cultural anthropologist and studied biochemistry before entering the field of medicine. He travels to West Africa several times a year to perform surgery and provide...

Shilpa P. Chetty, M.D.

Assistant Clinical Professor
Maternal and Fetal Medicine Specialist

Dr. Shilpa P. Chetty is an obstetrician and gynecologist who specializes in high-risk pregnancy and perinatal genetics. She has a special interest in prenatal diagnosis, fetal anomalies and the management of pregnancy complicated by medical and genetic disorders.

Chetty completed a medical degree at Loma Linda University, School of Medicine, followed by an internship and residency in...

Neda Ghaffari, M.D.

Assistant Clinical Professor

Dr. Neda Ghaffari has an interest in both maternal medicine and fetal medicine; extensive experience in managing medically complicated pregnancies, especially in patients with cardiac disease, malignancies in pregnancy, and congenital anomalies; skilled in fetal echocardiogram, an NTQR-certified provider, and California State Prenatal Screening Program...

Juan Gonzalez-Velez , M.D.

Assistant Professor

Dr. Juan Gonzalez-Velez is an obstetrician and gynecologist who specializes in high-risk pregnancies. Dr. Gonzalez-Velez completed a medical degree at the University of Puerto Rico School of Medicine, followed by a residency in obstetrics and gynecology, and fellowship in maternal fetal medicine at the Hospital of the University of Pennsylvania. He also received a Masters of Translational...

Ben Li, M.D.

Chief of Obstetrics, Medical Director of Labor & Delivery
Department of Obstetrics, Gynecology & Reproductive Sciences

Dr. Ben Li is a Maternal-Fetal Medicine specialist and Medical Geneticist. Dr. Li graduated from UCSF Medical School and completed his residency in Obstetrics and Gynecology at Parkland Memorial Hospital where he served as administrative chief resident. He returned home to complete both his Maternal-Fetal Medicine and Medical Genetics fellowships at UCSF.

Mary E. Norton, M.D.

Vice Chair, Clinical and Translational Genetics
Director, Program in Genetic and Genomic Prenatal Medicine

Dr. Mary Norton is a Maternal Fetal Medicine specialist as well as a clinical geneticist. She specializes in the care of women at high risk for having a baby with a birth defect or genetic disorder. She oversees the prenatal diagnosis program at UCSF, and is an expert in high-risk obstetrical ultrasound and prenatal diagnosis procedures such as amniocentesis and CVS. Her research interests...

Teresa Sparks, M.D.

Assistant Professor
Maternal Fetal Medicine and Clinical Genetics

Dr. Teresa Sparks is an obstetrician and gynecologist who specializes in high-risk pregnancies and perinatal genetics. She has particular interests in fetal anomalies, management of pregnancies affected by maternal or fetal genetic conditions, and prenatal diagnosis. Dr. Sparks has research interests focused on the genetic etiologies underlying non-immune hydrops fetalis, as well as on...

Mari-Paule Thiet, M.D.

Chief of Obstetrics, UCSF
Director, Division of Maternal Fetal Medicine
Chief of Obstetrics, Medical Director of Labor & Delivery
Vice Chair, Patient Safety and Quality Assurance
Russell K. Laros, Jr., MD Endowed Chair in Obstetrics, Gynecology and Reproductive Sciences

Dr. Mari-Paule Thiet, a perinatologist, is director of Maternal-Fetal Medicine at UCSF Medical Center, where she specializes in the medical and surgical complications of pregnancy. She cares for patients at UCSF Medical Center in San Francisco.

Thiet graduated from the University of Texas Southwestern Medical School in 1985 and completed her residency in obstetrics and gynecology at the...